Clear Streets: Visualize Chicago's Snow Plows in Real Time

On Jan 3rd 2012, the City of Chicago released Plow Tracker, an app that tracks the city's snow plows in real time.
ClearStreets app only hit us on Thursday evening, 12 hours before the storm descended on Chicago. So this is a rough draft, but it shows what can be done when the city embraces open data.

The dark lines on the map are road segments that plows have likely driven over since we started tracking them. That's it. We don't know whether they were salting, plowing, or just passing through. And we don't know for sure whether those streets are currently clear, because we don't have info about road conditions. Roads that were plowed early on might accumulate fresh snow as the storm ginds on.